The first winding has a voltage in proportion. R450 controls the excitation current in order to maintain the output voltage of the alternator.

B40 Leroy Somer Avr R448 Wiring Diagramchina Wiring Library
Leroy somer avr r450 wiring diagram. Avr 5384 en 1 general description the r150 automatic voltage regulator avr is a compact high performance encapsulated unit. R450 is performant in terms of voltage regulation simple to set to use and is reliable. Single phase sensing 11 description r 450t. Three phase sensing the r450 avr is supplied in a casing. With arep excitation the r 448 electronic avr is powered by two auxiliary windings which are independent of the voltage match circuit. F1 on x1 and f2 on z2 10a 250v voltage sensing.
The r450 automatic voltage regulator avr for the lsa series of industrial alternators provides excitation current up to 6 a with excellent reliability for shunt permanent magnet pmg or arep auxiliary winding excitation types. 0 110 v terminals 95 to 140 v. Leroy somer installation and maintenance 4342 en 201003 d r 450 m t avr. It is designed for alternators with a shunt arep or pmg excitation. Is reduced as indicated in the next diagram see 3214 fast acting fuses. 1 general information r 450m.
It incorporates the latest technology and efficient components to achieve a high degree of miniaturisation when applied to a 3 phase and 1 phase ac brushless generator within its input and output limits. R450 avr for shunt arep or pmg alternators r450 is an analog avr. Leroy somer 3972 en 052008 e 5 2 supply 21 arep excitation system for both arep pmg excitation systems the alternator voltage regulator is the r 448. R450 avr installation and maintenance mfdusjd1pxfsfofsbujpo 202005 2 450 avr 4531 en safety measures.